Before "Rocky," Sylvester Stallone worked as an extra, perhaps getting his most exposure as a street hoodlum harassing Woody Allen's character in 1971's "Bananas."
John Travolta —
John Travolta's charming demeanor earned him quite a few commercial roles in the 1970s, such as this ad for Safeguard soap -- that's him on the left, of course -- before his big break on "Welcome Back Kotter."
Keanu Reeves —
Yes, that's the star of "Speed" and "The Matrix" taking a big swig of soda after winning the big bike race in 1983. Before "Bill and Ted's Excellent Adventure," Reeves was the face selling products like Coke and Kellogg's Corn Flakes.
Courtney Cox —
Remember the young woman the Boss dances with in the 1984 music video for "Dancing in the Dark?" That's a pre-"Cougar Town"/"Friends"/"Family Ties" Courteney Cox.
Matt LeBlanc —
Cox's "Friend," Matt LeBlanc, spent his early career selling products like Heinz Ketchup in 1987 -- he was a master at waiting for just the right moment for that ketchup to come out -- Coke and Cherry 7-Up.
Tina Fey —
Tina Fey shot her one and only commercial, for Chicago's Mutual Savings Bank, in 1995. Even her famous eye-roll is present and accounted for. The ad might have faded into obscurity until its production company Purple Onion posted it online. Nerds!
Rainn Wilson —
Before his star-making turn as Dwight on "The Office," Rainn Wilson was one of the many Thermians in 1999's sci-fi spoof "Galaxy Quest." However, the moment where he got the most screen time was this deleted scene.
Jon Kopaloff/Getty Images
Megan Fox —
Megan Fox had a blink-and-you'll-miss-it moment in a club scene in Michael Bay's 2003 sequel "Bad Boys 2." (Here she is that year with then-boyfriend David Gallagher of "7th Heaven.") The director made her a star four years later in "Transformers."
Dean Winters —
A few years ago, Dean Winters was best known as Liz Lemon's conniving ex, Dennis, on "30 Rock," and as Ryan on "Oz." But in something of a twist, he's probably even more famous as "Mayhem" in a series of ads for Allstate.